The document emphasizes the importance of identifying target groups before planning training sessions, as the needs and backgrounds of different trainees can significantly impact the training effectiveness. It outlines various factors to consider when creating trainee profiles, such as number of participants, age range, education, and motivation, to tailor the training content appropriately. Additionally, it highlights that trainers should foster an engaging and inclusive environment, adjust communication for diverse literacy levels, and utilize existing knowledge within the group to enhance the learning experience.